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<h4 class="subsection" id="Dump-output-verbosity-1"><span>9.7.4 Dump output verbosity<a class="copiable-link" href="#Dump-output-verbosity-1"> &para;</a></span></h4>
<a class="index-entry-id" id="index-dump-verbosity"></a>

<p>The dump verbosity has the following options
</p>
<dl class="table">
<dt>&lsquo;<samp class="samp">optimized</samp>&rsquo;</dt>
<dd><p>Print information when an optimization is successfully applied. It is
up to a pass to decide which information is relevant. For example, the
vectorizer passes print the source location of loops which got
successfully vectorized.
</p>
</dd>
<dt>&lsquo;<samp class="samp">missed</samp>&rsquo;</dt>
<dd><p>Print information about missed optimizations. Individual passes
control which information to include in the output. For example,
</p>
<div class="example smallexample">
<pre class="example-preformatted">gcc -O2 -ftree-vectorize -fopt-info-vec-missed
</pre></div>

<p>will print information about missed optimization opportunities from
vectorization passes on stderr.
</p>
</dd>
<dt>&lsquo;<samp class="samp">note</samp>&rsquo;</dt>
<dd><p>Print verbose information about optimizations, such as certain
transformations, more detailed messages about decisions etc.
</p>
</dd>
<dt>&lsquo;<samp class="samp">all</samp>&rsquo;</dt>
<dd><p>Print detailed optimization information. This includes
<var class="var">optimized</var>, <var class="var">missed</var>, and <var class="var">note</var>.
</p></dd>
</dl>

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